Cannot add third and fourth nameserver

I need to add third and fourth nameserver. We got additional ip addresses set up and under Server Configuration -> Basic cPanel & WHM Setup I was able to add additional nameservers, successfully assigned ip addresses and added an A entries and save changes. However, under DNS Functions -> Nameserver IPs I see only the original two nameservers.

Examining of /etc/wwwacct.conf and /etc/nameserverips shows that new servers were added successfully. But I am unable to query the new nameservers ( dig @newnameserv mydomain.sufix ) from my local computer, where I did make the required entries in my hosts file, to bypass dns propagation. Dig just times out, but I am able to ping the IP so everything should work, but it seems that named is not listening and responding.